UPDATED QUESTION:
I had to import a project from some sources that I had been given. The project complained of missing imports. Therefore, I downloaded the .jar from internet and added them as external jar.
In my Eclipse Indigo Java EE, I added missing .jar file to Java Project by following How to import a jar in Eclipse
The errors in the import statements in the classes disappeared after adding the jar. However, the MANIFEST.MF throws a bundle not resolved error. The MANIFEST.MF file which had existed in the sources had a "Require-Bundle" under which these were listed(perhaps bundled already by them but the bundles weren't given) where the error I get is:
eg: org.apache.commons.configuration;bundle-version="1.7.0"
Bundle 'org.apache.commons.configuration' cannot be resolved
How to resolve this?
Thanks in advance